Full
Outline
Anshan-type hematite accounts for about 55.20% of the total identified iron ore resources in China, and its flotation generally requires high temperature (about 35 ℃ or more) conditions, which increases the production cost. Therefore, the flotation behavior of hematite and quartz was studied with a self-developed MY-type collector and compared with the sodium oleate flotation system. Utilizing detection and analysis techniques such as contact angle, Zeta potential and infrared spectroscopy analysis, the action mechanism of MY on mineral surface was discussed. The results of single-mineral flotation experiments show that under the temperature range of 15-35 ℃, the pH of 11.5, and the dosage of 200 mg/L, the MY-type collector can achieve recovery rate of quartz and hematite exceeding 87.25% and 92.50% respectively. At 25 ℃, under the interaction of the three agents of starch, CaO, and collector, the maximun difference in single mineral recovery rate of quartz and hematite is 89.25 percentage points under the MY flotation system, which significantly improves the difference in the flotation of quartz and hematite compared to the sodium oleate flotation system (the maximun difference in recovery rate is 56.25 percentage points). The mechanism analysis results indicate that MY collector exhibits multifaceted synergistic adsorption effects on quartz mineral surfaces, including electrostatic adsorption, hydrogen bonding, and chemical bonding, while on hematite surfaces, it primarily involves molecular adsorption and electrostatic adsorption. Due to the presence of multiple active groups such as S＝O, —NH2 and C＝O in its structure, MY forms coupled synergistic interactions across multiple active sites, enhancing its quartz recovery capability. This also amplifies the floatability difference between quartz and hematite, effectively promoting the separation of hematite and quartz in the room-temperature reverse flotation system.
34
11
| 科 Family | 属数 Number of genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) | 属 Genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) |
|---|---|---|---|---|---|---|
| 鹅膏菌科Amanitaceae | 2 | 11 | 5.26 | 鹅膏菌属 Amanita | 10 | 4.78 |
| 小菇科 Mycenaceae | 2 | 12 | 5.74 | 丝盖伞属 Inocybe | 5 | 2.39 |
| 多孔菌科 Polyporaceae | 8 | 14 | 6.70 | 蜡蘑属 Laccaria | 5 | 2.39 |
| 红菇科 Russulaceae | 3 | 23 | 11.00 | 小皮伞属 Marasmius | 6 | 2.87 |
| 小菇属 Mycena | 11 | 5.26 | ||||
| 光柄菇属 Pluteus | 5 | 2.39 | ||||
| 红菇属 Russula | 17 | 8.13 | ||||
| 栓菌属 Trametes | 5 | 2.39 |
关闭全屏
No. 86 Xueyuan South Road, Haidian District, Beijing
010-62662699(Operation and Technical Support)
qkjq@cast.org.cn
Copyright © 2025 China Association for Science and Technology. All rights reserved. For all open access content, the relevant licensing terms apply.
Sponsored by the Office of the Leading Group for Cybersecurity and Informatization of CAST, and supported by Science and Technology Review Publishing House
